PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/12-01:27:50
G01     40.0           14.5                4.3 +/-    1.68      10.7 +/-    1.68  0.050 / 0.060
G02     198.8          12.1                4.9 +/-    6.19      13.0 +/-    6.19  0.070 / 0.060
G06     175.4          41.1                9.3 +/-    1.09      13.3 +/-    1.09  0.090 / 0.300
G13     236.1          20.3                6.8 +/-    3.33      14.8 +/-    3.33  0.120 / 0.230
G15     267.9          11.5                7.8 +/-    2.43      21.2 +/-    2.43  0.080 / 0.070
G17     359.9          70.0                5.8 +/-    0.53       6.2 +/-    0.53  0.090 / 0.060
G19     285.7          70.1                5.3 +/-    0.60       5.6 +/-    0.60  0.020 / 0.030
G24     315.9          20.9                5.0 +/-    3.15      10.8 +/-    3.15  0.030 / 0.030
G28     75.6           45.1                4.4 +/-    1.13       5.9 +/-    1.13  0.320 / 0.290
G30     154.3          22.0                7.9 +/-    1.97      16.5 +/-    1.97  0.190 / 0.180